Machine for cambering and tempering metal



May 22, 1923.

C. GIRL ET AL MACHINE FOR CAMBERING AND TEMPERING METAL Filed March 13, 1922 2 Sheets-Sheet 1 rwmll I illll f fl e/ifan 4W /W 4M VZLY May 22, 11923.

C. GIRL ET AL MACHINE FOR CAMBERING AND TEMPERING METAL Filed March 15, 1922 2 sheets'sheet' 2 Patented May 22, I923.

UNITE STARS lfidtsldt CHRISTIAN GIRL AND HERBERT S. JANDUS, 0F KALAMAZOO, MICHIGAN; SAID JANDUS ASSIGNOR TO SAID GIRL.

MACHINE FOR CAMBERING AND TEMPERING METAL.

Application filed March 13, 1922. Serial No. 543,490.

To all whom it may concern.

Be it known that we, CHRISTIAN GIRL and HERBERT- S. JANDUs, citizens of the United States, residing at Kalamazoo, in the county of Kalmazoo and State of Michigan, have invented a certain new and useful Improvement in Machines for Cambering and Tempering Metal, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to machines for shaping and tempering metal and more particularly to machines which are designed for the cambering and tempering of spring plates.

As is well known, after the plates from which vehicle springs are formed, are shaped, they are tempered by being quenched, preferably by immersion in oil. It is the object of the present invention to provide a cambering machine, for shaping the spring plates or like articles, with improved means for performing the quenching or tempering operation, such means including an oil (or other liquid-containing) tank which is associated with and which preferably encloses the lower part of the cambering machine and in which the oil may be raised and lowered in a convenient and effective manner, so that, when the level of the oil or other quenching liquid in said tank is raised, the spring plates will be immersed and quenched and, after the quenching operation, the oil level may be conveniently lowered to a level below that of said plates, permitting the plates to be removed from the machine.

In the form of our invention shown herein the change in the liquid level is effected by means of a hollow body which is raised and lowered by a mechanical connection with the cambering machine, and in time with the movement of the ram of the latter, so that, when the ram is lowered to form the spring or other article, the body is simultaneously lowered into the liquid, and when the ram is lifted, the hollow liquid-displacing body is also lifted.

In the accompanying drawings, a sectional elevation of a cambering machine embodying our invention; Fig. 2 a detail in section on the line 2-2 of Fig. 1; and Fig. 3 a front elevation of the apparatus shown in Fig. 1.

Fig. 1 is quently the body 8 in low position,

Referring specifically to the drawings, the cambering machine comprises generally a pair of vertical guide frames 1 supporting a shaft 2 having a pair of eccentrics 2 thereon upon which are suspended, by arms 3, the upper cambering head or ram. The shaft 2 is driven by a motor l, the shaft 5 of which is mounted in brackets 5 supported by the guide frames 1, the said shaft being provided with a pinion 5 mesh ing with a gear 6 on the shaft 2. The upper head or ram 6 of the cambering machine is suspended from the arms 3 and cooperates with the lower fixed head or anvil 6 mounted in a tank, indicated generally at 7. The lower head or anvil 6 is mounted in the tank 7 below the top thereof, the said tank having therein oil (or other quenching liquid) normally at a level below the top of the form or anvil 6 and below the level of plate S applied thereto.

The oil level is raised displacing body which as shown consists of a hollow vessel or block 8 which may be raised and lowered in the tank behind or beside the cambering machine. This body is connected by a rod 9 to a crank 10 on a shaft 11 which is turned in proper time by sprockets 12 and 13, a chain 14, and a half-stop clutch 15 mounted on the shaft. This halfstop clutch may be of a known type, acting to turn the shaft 11 a half turn, and then stop the same with the crank, and consethe shaft being afterwards picked up and lifted in time with the lift of the ram, the intent being to hold the oil level raised a sufficient time to accomplish the quenching operation. Any other suitable mechanical means may be employed for effecting the same result. The body or vessel 8 is preferably provided with trunnions 16 which slide between guides 17 secured to the opposite walls of the tank 7 thereby to give a straight-line movement to said body or vessel.

In operation, as stated, the oil level is normally below the forming elements of the cambering machine. When the ram descends, the body or vessel 8 is also forced down into the oil, displacing a volume thereof sufficient to raise the level of the oil in the tank and submerge the article clamped between said forming elements; after the article is quenched, the ram is lifted, together with the displacing vessel or body, and the and lowered by a our invention,

placing a volume of liquid in the tank to to raise and lower the level thereof and quench an article held in the cambering machine.

'2. The combination; with a quenching tank and a cambering machine supported therein, of means for mechanically displacing a volume of liquid in the tank to raise and lower the level thereof and quench articleheld in the cambering machine, said means including a displacing body movable into and out of the liquid in the tank. v 3. In a quenching apparatus, the combination of a liquid-containing tank, and a dis- Placing y movable into and out of the liquid in the tank and of sufiicient displacement to raise andlower' the oil level in the tank by such movement.

4:. The combination, with a cambering machine having forming elements, of a quenching tank the liquid level in which is normally below said elements, and a displacing body movable into and out of the liquid in th'e'tank thereby to vary the level of the liquid in the tank, said body having an'a'ut'onlatically operating connection with a movable element of the cambering machine.

I 5. The c'ombinatio'n with a cambering machine having a formingram, of a quenching tank in which the machine is mounted, the normal level of liquid in said tank being below said ram, a displacing body of liquid insaid tank being below said ram, a displacing body movable into and out of the liquid in the tank thereby to raise and lower the level thereof, and means to. automatically move said body in time with the movement of the rain, whereby the liquid level is raised when the ram is lowered, and vice versa. q q

6. The coinbinatioii, with a camberiilg inachine having a reciprocating rain and means to'operate the same, are quenching tank in which the machine is mounted, the liquid level in the tank being normally below the ram, a displacing body movable into and out of the liquid in the tank to raise and lower the level thereof, and an operative connection between the body and the operz'tting means for the ram Whereby the body is moved in time with the movements of the I'llm. v

T. The combination, with a cambering machine having, a reciprocating ram and means to operate the same, tank in which the machine liquid; level in the tank low the ram, a displacing body, movable into and out of'the liquidin the tank to raise and lower the level thereof, all operating; connection between the body and the operating means for the ram adapted to move the body in time with the movements of the rain, and guides in the tank for the s'aid body. In testimony whereof, We hereunto our signatures in the presence of two witnesses.

of a quenching is mounted, the

CHRISTlAN GIRL.

' HERBERT S. JANDU S Witnesses:

J. E. SALoER, E N. Y. Kmmlv'sm being nori'nally be 

